JP2022127118A - Radiation image photographing device, program, information processing device, and radiation image photographing method - Google Patents

Abstract

To provide a radiation image photographing device, a program, an information processing device, and a radiation image photographing method capable of identifying a lesioned part during the operation.SOLUTION: In one embodiment, a radiation image photographing device is provided. This radiation image photographing device includes a first detector, a second detector, and an information processing device. The first detector is a portable type and is configured to be able to detect one of a pair of radiations emitted in different directions from a subject by radioactive decay. The second detector is a stationary type and is configured to be able to detect the other of the pair of radiations. The information processing device includes a first detection processing unit and a second detection processing unit. The first detection processing unit is configured to be able to generate first detection information including positional information of an emission source of a radiation on the basis of the detection result from the first detector. The second detection processing unit is configured to be able to generate second detection information including the positional information of the emission source on the basis of the detection result from the first detector and the detection result from the second detector.SELECTED DRAWING: Figure 3

Description

The present invention relates to a radiographic imaging apparatus, a program, an information processing apparatus, and a radiographic imaging method.

PET (positron emission tomography) examination using a PET drug such as FDG (fluorodeoxyglucose), radioisotope, or radionuclide labeled with a positron emitting nuclide ¹⁸ F on a glucose analog molecule, It accumulates in lesions such as cancer and inflammation, making it easier to find lesions in captured images.

Also, a technique for identifying lesions using a Compton camera has been proposed (see Patent Document 1, for example).

JP 2019-117116 A

By the way, although FDG-PET images make it easy to find lesions, it is often difficult to identify lesions during resection, such as when the lesion is a lymph node. Moreover, since the PET apparatus is large, it is difficult to perform imaging using the PET apparatus during surgery.

In view of the above circumstances, the present invention provides a radiographic imaging apparatus, a program, an information processing apparatus, and a radiographic imaging method that are capable of identifying a lesion during surgery.

According to one aspect of the present invention, a radiographic imaging apparatus is provided. This radiographic imaging apparatus includes a first detector, a second detector, and an information processing device. The first detector is portable, and is configured to be capable of detecting one of a pair of radiations generated by radioactive decay from the specimen and emitted in directions different from each other. The second detector is stationary and configured to detect the other radiation of the pair of radiation. The information processing device includes a first detection processing section and a second detection processing section. The first detection processing unit is configured to be capable of generating first detection information including position information of a radiation emitting source based on a detection result of the first detector. The second detection processing unit is configured to be capable of generating second detection information including position information of the emission source based on the detection result of the first detector and the detection result of the second detector.

According to one aspect of the present invention, it becomes possible to identify lesions during surgery.

1 is a diagram showing a configuration example of a radiographic imaging apparatus 1 according to an embodiment of the present invention; FIG. It is a figure for demonstrating the detection method of radiation. FIG. 2 is a diagram showing an example of the appearance of detector 2, which is the first detector; 2 is a diagram showing a configuration example of a camera 24; FIG. It is a figure for demonstrating the structure of the detector 3 which is a 2nd detector. 2 is a diagram showing a configuration of an information processing device 5; FIG. 2 is a block diagram showing a functional configuration of an information processing device 5; FIG. FIG. 4 is an activity diagram showing the flow of lesion excision; It is the figure which showed an example of the image image|photographed with the PET apparatus before an operation. FIG. 4 is an activity diagram showing the flow of lesion identification and excision; 4 is an activity diagram showing the flow of operations of the information processing device 5. FIG. 4 is an activity diagram showing the flow of operations of the information processing device 5. FIG.

Embodiments of the present invention will be described below with reference to the drawings. Various features shown in the embodiments shown below can be combined with each other.

By the way, the program for realizing the software appearing in this embodiment may be provided as a non-transitory computer-readable medium (Non-Transitory Computer-Readable Medium), or may be downloaded from an external server. It may be provided as possible, or may be provided so that the program is activated on an external computer and the function is realized on the client terminal (so-called cloud computing).

Further, in the present embodiment, the term “unit” may include, for example, a combination of hardware resources implemented by circuits in a broad sense and software information processing that can be specifically realized by these hardware resources. . In addition, various information is handled in the present embodiment, and these information are, for example, physical values of signal values representing voltage and current, and signal values as binary bit aggregates composed of 0 or 1. It is represented by high and low, or quantum superposition (so-called quantum bit), and communication and operation can be performed on a circuit in a broad sense.

A circuit in a broad sense is a circuit implemented by appropriately combining at least circuits, circuits, processors, memories, and the like. Application Specific Integrated Circuits (ASICs), programmable logic devices (e.g., Simple Programmable Logic Devices (SPLDs), Complex Programmable Logic Devices (CPLDs), and field It includes a programmable gate array (Field Programmable Gate Array: FPGA).

1. Overall Configuration FIG. 1 is a diagram showing a configuration example of a radiographic imaging apparatus 1 according to an embodiment of the present invention. As shown in the figure, the radiographic imaging apparatus 1 includes a detector 2 (first detector), a detector 3 (second detector), a measuring device 4, and an information processing device 5. .

The detector 2 is portable, and is configured to detect one of a pair of radiations generated by radioactive decay from a specimen and emitted in mutually different directions. The directions in which the radiation is emitted are, for example, directions that differ from each other by 180 degrees. A portable type is a device that can be held and operated by an operator, and specifically, a device that can be used by inserting it into the patient's abdominal cavity or thoracic cavity. Therefore, detector 2 is sized to be inserted into a port used in laparoscopic or thoracoscopic surgery. Further, the detector 2 may be of a type used in the surgical field during laparotomy. Details of the detector 2 will be described later.

The detector 3 is of a stationary type and is configured to detect the other radiation of the pair of radiation. The stationary type is used by being installed at a predetermined position, for example, on an operating table, and specifically, is installed on the side of the operating table opposite to the side on which the patient lies.

The measuring device 4 is configured to be able to measure the relative position of the detector 2 with respect to the detector 3, and performs optical measurement, for example.

The information processing device 5 processes the detection result of the detector 2 and the detection result of the detector 3, and generates an image that can be visually recognized by the operator. Details of the information processing device 5 will be described later.

This radiographic image capturing apparatus 1 detects radiation emitted by the positron-emitting nuclide ¹⁸ F and forms an image. Detection of radiation will be described. FIG. 2 is a diagram for explaining a radiation detection method. As shown in the figure, an absorber 91 and a scatterer 92 are used for radiation detection. The absorber 91 is the absorber of the Compton camera and also serves as the detector of the PET apparatus. The scatterer 92 is the scatterer of the Compton camera. In this configuration, the combination of the scatterer 92 and the absorber 91 operates as a Compton camera to detect the radiation emitted by the nuclide N, and the absorber 91 and another absorber 91 facing the absorber 91. operates as a PET device to detect the radiation emitted by nuclide N. The radiographic imaging apparatus 1 uses these principles to detect radiation.

2. detector 2
FIG. 3 is a diagram showing an example of the appearance of the detector 2, which is the first detector. As shown in the figure, the detector 2 has a grip portion 21 and an insertion portion 23 . The grasping portion 21 is a portion grasped by the operator during surgery, and the grasping portion 21 is provided with an indicating portion 22 and a measured portion 41 . The instruction unit 22 is a switch for issuing a switching instruction between the Compton mode in which radiation is detected only by the detector 2 and the PET mode in which radiation is detected by the detectors 2 and 3 . That is, the instruction unit 22 is configured to be able to send an instruction as to which of the first display information and the second display information is to be output to the output unit of the information processing device 5, which will be described later. The first display information indicates the detection result in the Compton mode, and the second display information indicates the detection result in the PET mode. The measured part 41 is a marker used for measurement by the measuring device 4 . The insertion portion 23 is a portion to be inserted into the patient's abdominal cavity or thoracic cavity, and has a camera 24 at its distal end.

Now, the camera 24 will be described. FIG. 4 is a diagram showing a configuration example of the camera 24. As shown in FIG. In addition, in FIG. 4, the cylindrical casing is shown in a transmissive state. As shown in the figure, the camera 24 includes a plurality of units each including a scatterer 241, a substrate 242, and a communication section 243, and these units are arranged in a stacked state. The scatterer 241 scatters radiation and corresponds to the scatterer 92 shown in FIG. The substrate 242 has an absorber and a circuit for generating an electrical signal based on the radiation absorbed by the absorber. The absorber mounted on this substrate 242 corresponds to the absorber 91 shown in FIG. The communication unit 243 transmits the electrical signal generated by the board 242 to the information processing device 5 via the cable 25 .

3. detector 3
FIG. 5 is a diagram for explaining the configuration of the detector 3, which is the second detector. As shown in the figure, the detector 3 has an absorber 31 . This absorber 31 corresponds to the absorber 91 shown in FIG. Although not shown, the detector 3 includes a circuit for generating an electrical signal based on the radiation absorbed by the absorber 31 and a circuit for transmitting the generated electrical signal to the information processing device 5 via a cable or the like. and a communication unit that transmits.

The absorber 31 is provided on the surface of the operating table B opposite to the surface on which the patient P lies, that is, at a position facing the camera 24 when the detector 2 is used during surgery. The detector 3 (second detector) has a curved surface facing the detector 2 (first detector). Note that the absorbent body 31 itself is configured by a combination of rectangular parallelepipeds.

4. Measuring device 4
The measuring device 4 measures the relative position of the detector 2 with respect to the detector 3. Specifically, a measured portion 41 provided in the detector 2 and a measured portion provided in the detector 3 ( (not shown) are optically measured to identify the relative positions of the two. In addition, since the measuring device 4 itself uses the existing technology, detailed description is omitted.

5. Information processing device 5
Next, the configuration of the information processing device 5 will be described. FIG. 6 is a diagram showing the configuration of the information processing device 5. As shown in FIG. As shown in the figure, the information processing device 5 has a processing unit 51, a storage unit 52, a temporary storage unit 53, an external device connection unit 54, and a communication unit 55. are electrically connected via a communication bus 56 inside the information processing device 5 .

The processing unit 51 is implemented by, for example, a central processing unit (CPU), operates according to a predetermined program stored in the storage unit 52, and implements various functions.

The storage unit 52 is a non-volatile storage medium that stores various information. This is realized by a storage device such as a hard disk drive (HDD) or a solid state drive (SSD). Note that the storage unit 52 can be arranged in another device that can communicate with the information processing device 5 .

Temporary storage unit 53 is a volatile storage medium. This is implemented by a memory such as a random access memory (RAM), for example, and stores information (arguments, arrays, etc.) temporarily required when the processing unit 51 operates.

The external device connection unit 54 is, for example, a connection unit conforming to standards such as Universal Serial Bus (USB) and High-Definition Multimedia Interface (HDMI), and is connected to an input device such as a keyboard, A display device such as a monitor can be connected.

The communication unit 55 is, for example, a communication means conforming to a local area network (LAN) standard, and realizes communication between the information processing device 5 and the local area network or a network such as the Internet via the local area network. .

For the information processing device 5, a general-purpose server computer, a personal computer, or the like can be used, and the information processing device 5 can be configured using a plurality of computers.

Next, functions of the information processing device 5 will be described. The information processing device 5 constitutes the radiographic imaging device 1, and operates according to a program to realize each functional unit described later. This program is a program that causes a computer to operate or function as an information processing device. In addition, this program can be recorded on a computer-readable recording medium such as a magnetic disk, optical disk, magneto-optical disk, or semiconductor storage device. A computer-readable recording medium recording a program for making it available can be used for distribution or the like.

FIG. 7 is a block diagram showing the functional configuration of the information processing device 5. As shown in FIG. As shown in the figure, the information processing device 5 includes a detection processing unit 501 as a first detection processing unit, a detection processing unit 502 as a second detection processing unit, a display information generation unit 503, and a reception unit. 504 , an input unit 505 and an output unit 506 .

The detection processing unit 501 is configured to be capable of generating first detection information including position information of the radiation source based on the detection result of the detector 2 . At this time, the detection processing unit 501 may correct the first detection information according to the measurement result of the measuring device 4 . This first detection information is used as the output of the Compton mode.

The detection processing unit 502 is configured to be able to generate second detection information including position information of the emission source based on the detection result of the detector 2 and the detection result of the detector 3 . At this time, the detection processing unit 502 may correct the second detection information according to the measurement result of the measuring device 4 . This second detection information is used as the output of the PET mode.

The display information generation unit 503 is configured to be capable of generating first display information that is an image of the first detection information and second display information that is an image of the second detection information. At this time, the display information generation unit 503 superimposes the first display information or the second display information on an image such as an image output by a laparoscope, an image output by a thoracoscope, or an image output by an ultrasonic diagnostic apparatus. You may make it

The receiving unit 504 instructs the output unit 506 to output either the first display information or the second display information, that is, whether to output in the Compton mode or in the PET mode. configured to accept. Specifically, the reception unit 504 receives a signal corresponding to the operation of the instruction unit 22 of the detector 2 as an instruction. Note that when the detector 2 does not have the instruction unit 22, the instruction may be received from a keyboard (not shown) connected to the information processing device 5 or the like.

The input unit 505 is configured to be able to input an image output by any one of the laparoscope 7, the thoracoscope, and the ultrasonic diagnostic apparatus 8. FIG. The image input to the input unit 505 is used when the display information generation unit 503 superimposes the first display information and the second information.

Output unit 506 outputs either the first display information or the second display information to display device 6 .

6. Radiographic Image Capturing Method Next, a radiographic image capturing method will be described. A radiographic imaging method includes a first step and a second step. The first step is based on the detection result of a portable first detector configured to detect one of a pair of radiations generated by radioactive decay from the specimen and emitted in mutually different directions. to generate first detection information including location information of the radiation emitting source. In the second step, based on the detection result of the first detector and the detection result of the stationary second detector configured to detect the other radiation of the pair of radiation, the emission source generating second detection information including location information for the . The directions in which the radiation is emitted are, for example, directions that differ from each other by 180 degrees.

Here, the flow of radiographic imaging will be specifically described. FIG. 8 is an activity diagram showing the flow of lesion excision.

First, as a preoperative treatment, the operator or his assistant administers FDG to the patient (A101). Then, the operator determines whether or not preoperative PET imaging is necessary (A102), and if it is determined that PET imaging is necessary, FDG-PET imaging is performed using the PET apparatus (A103). After that, the operator or the like performs pre-excision processing of the lesion (A104). The resection pretreatment includes anesthesia for the patient and attachment of a laparoscopic port and the like. Then, the lesion is excised, and the lesion is identified and excised (A105). When specifying this lesion, imaging is performed by the radiographic imaging apparatus 1, and this processing will be described later. After the lesion is excised, post-excision processing is performed (A106), and the excision is completed. The post-excision treatment includes suturing of the incised portion for attachment of a laparoscopic port or the like, awakening from anesthesia, and the like.

By the way, an image taken by a PET device before surgery is as shown in FIG. 9, for example. Although the existence of the lymph node L in this image can be confirmed, it is difficult to identify which of the plurality of lymph nodes it is. Therefore, intraoperative processing is required to identify the lesion.

Subsequently, the details of the identification and excision processing of the lesion of A105 will be described. FIG. 10 is an activity diagram showing the flow of lesion identification and excision.

The operator first operates the instruction unit 22 to switch to the Compton mode in which the image output from the output unit 506 is based on the first display information (A201). Since the Compton mode can detect radiation over a relatively wide area, the operator performs a wide area survey in the Compton mode (A202). This wide area survey is performed until a lesion is detected ([lesion not detected] in A203, [continue] in A204).

Then, when a lesion is detected in the Compton mode ([lesion detection] in A203), the operator operates the instruction unit 22 to determine that the image output from the output unit 506 is based on the second display information. Switching to the PET mode is performed (A205). Since the PET mode can detect radiation from a relatively narrow range, the operator measures the lesion previously detected by the PET mode (A206) and confirms the detailed position of the lesion (A207 ). Based on these results, the operator determines whether the lesion needs to be resected (A208). Determination as to whether or not resection of a lesion is necessary is made, for example, by evaluating the malignancy of the lesion as one of the indices. Then, when it is determined that the lesion is to be resected ([resection target] in A208), the operator resects the lesion (A209) and subjects the resected lesion to pathological diagnosis (A210). Instead of the pathological diagnosis, the radiographic imaging apparatus 1 may be operated in the PET mode to photograph the resected lesion and confirm the resected portion.

Subsequently, the operator operates the instruction unit 22 to switch to the Compton mode (A201), and confirms the presence or absence of residual lesions in the Compton mode. This confirmation of the presence or absence of residual lesions is performed either when the operator resects the lesion (A209) or when the operator does not determine that the lesion is a target for resection (A208 [non-target]). is also done. If a residual lesion is detected, the same process is repeated. If no residual lesion is detected, the operator determines to end the lesion identification and excision processing ([lesion not detected] in A203, A204 to [Exit]).

Next, the flow of operations of the information processing device 5 when the operator is performing processing for lesion identification and excision will be described. FIG. 11 is an activity diagram showing the flow of operations of the information processing device 5. As shown in FIG.

While the information processing apparatus 5 is operating ([Continue] at A301), when the receiving unit 504 receives an output instruction in the Compton mode ([Compton mode] at A302), the detection processing unit 501 starts detection processing. to generate the first detection information (A303), the display information generation unit 503 generates the first display information based on the first detection information (A304), and the output unit 506 generates the first display information. Output to the display device 6 (A305). On the other hand, when the reception unit 504 receives an output instruction in the PET mode ([PET mode] in A302), the detection processing unit 502 performs detection processing to generate second detection information (A306), and the display information generation unit 503 generates the second display information based on the second detection information (A307), and the output unit 506 outputs the second display information to the display device 6 (A308). It should be noted that the information processing apparatus 5 terminates the operation ([End] in A301) when the shutdown instruction is received.

Further, the information processing device 5 can generate the first display information and the second display information in parallel, and switch only the output according to the instruction from the instruction unit 22 . FIG. 12 is an activity diagram showing the flow of operations of the information processing device 5. As shown in FIG.

While the information processing device 5 is operating ([Continue] in A401), the detection processing unit 501 performs detection processing to generate first detection information (A402). The unit 502 performs detection processing to generate second detection information (A403). Then, the display information generation unit 503 generates first display information based on the first detection information and generates second display information based on the second detection information (A404). Then, when the reception unit 504 receives an output instruction in the Compton mode ([Compton mode] at A405), the output unit 506 outputs the first display information to the display device 6 (A406), and the reception unit 504 receives an output instruction in the PET mode ([PET mode] at A405), the output unit 506 outputs the second display information to the display device 6 (A407). When the information processing apparatus 5 receives a shutdown instruction, it ends the operation ([End] in A401).

7. Others The present invention may be provided in each aspect described below.
In the radiographic imaging apparatus, the first detector is sized to be inserted into a port used for laparoscopic surgery or thoracoscopic surgery.
In the radiographic imaging apparatus, a measuring device is provided, the measuring device is configured to be able to measure the relative position of the first detector with respect to the second detector, and the first detection processing unit includes the The radiographic imaging apparatus, wherein the first detection information is corrected according to the measurement result of the measuring device, and the second detection processing unit corrects the second detection information according to the measurement result of the measuring device. .
In the radiographic imaging apparatus, the information processing apparatus includes a display information generation section, and the display information generation section generates first display information obtained by imaging the first detection information and the second detection information. and second display information obtained by imaging the radiographic image capturing apparatus.
In the radiographic imaging device, the information processing device includes an output unit and a reception unit, and the output unit can output either one of the first display information and the second display information. In the radiographic imaging apparatus, the receiving unit is configured to be able to receive an instruction as to which of the first display information and the second display information is to be output to the output unit.
In the radiographic imaging apparatus, the first detector includes an instruction section, and the instruction section causes the output section to output either the first display information or the second display information. A radiographic imaging apparatus configured to be capable of sending instructions for
In the radiographic imaging device, the information processing device includes an input unit, the input unit is configured to be able to input an image output by one of a laparoscope, a thoracoscopic device, and an ultrasonic diagnostic device, and the display The radiographic imaging apparatus, wherein the information generator is configured to be able to superimpose the first display information or the second display information on the image.
In the radiographic imaging apparatus, the second detector has a curved surface facing the first detector.
A program that causes a computer to operate as an information processing device, the program causing the computer to function as the information processing device.
A computer-readable recording medium recording a program for operating a computer as an information processing device, the computer-readable recording medium recording the program for causing the computer to function as the information processing device.
An information processing apparatus comprising a first detection processing unit and a second detection processing unit, wherein the first detection processing unit is a pair that is generated by radioactive decay from a specimen and emitted in mutually different directions. first detection information including position information of the radiation source based on the detection result of a portable first detector configured to detect one of the radiations of and the second detection processing unit detects the detection result of the first detector and the detection result of a stationary second detector configured to detect the other radiation of the pair of radiation. an information processing device configured to be capable of generating second detection information including location information of said emission source, based on:
A radiographic imaging method comprising a first step and a second step, wherein the first step is one of a pair of radiations generated by radioactive decay from a specimen and emitted in mutually different directions. generating first detection information including position information of a radiation emitting source based on a detection result of a portable first detector configured to detect one radiation; , the position of the emission source based on the detection result of the first detector and the detection result of a stationary second detector configured to detect the other radiation of the pair of radiation A radiographic imaging method for generating second detection information containing information.
Of course, it is not limited to this.

Reference Signs List 1: Radiographic imaging device 2: Detector 3: Detector 4: Measuring device 5: Information processing device 6: Display device 7: Laparoscope 8: Ultrasound diagnostic device 18F: Positron emitting nuclide 21: Grip part 22: Instruction part 23: insertion portion 24: camera 25: cable 31: absorber 41: measured portion 51: processing portion 52: storage portion 53: temporary storage portion 54: external device connection portion 55: communication portion 56: communication bus 91: absorber 92: Scattering body 241: Scattering body 242: Substrate 243: Communication unit 501: Detection processing unit 502: Detection processing unit 503: Display information generation unit 504: Reception unit 505: Input unit 506: Output unit B: Operating table L: Lymph Node N: nuclide P: patient

Claims (12)

A radiographic imaging device,
A first detector, a second detector, and an information processing device,
The first detector is portable and configured to detect one of a pair of radiations generated by radioactive decay from the specimen and emitted in mutually different directions,
The second detector is a stationary type and is configured to detect the other radiation of the pair of radiation,
The information processing device includes a first detection processing unit and a second detection processing unit,
The first detection processing unit is configured to be capable of generating first detection information including position information of the radiation emitting source based on the detection result of the first detector,
The second detection processing unit can generate second detection information including position information of the emission source based on the detection result of the first detector and the detection result of the second detector. consists of
Radiation imaging device. In the radiographic imaging apparatus according to claim 1,
The first detector is sized to be inserted into a port used for laparoscopic or thoracoscopic surgery,
Radiation imaging device. In the radiographic imaging apparatus according to claim 1 or 2,
Equipped with a measuring device,
The measuring device is configured to be able to measure the relative position of the first detector with respect to the second detector,
The first detection processing unit corrects the first detection information according to the measurement result of the measuring device,
The second detection processing unit corrects the second detection information according to the measurement result of the measuring device.
Radiation imaging device. In the radiographic imaging apparatus according to any one of claims 1 to 3,
The information processing device includes a display information generation unit,
The display information generation unit is configured to be able to generate first display information that is an image of the first detection information and second display information that is an image of the second detection information.
Radiation imaging device. In the radiographic imaging apparatus according to claim 4,
The information processing device includes an output unit and a reception unit,
The output unit is configured to be capable of outputting either one of the first display information and the second display information,
The reception unit is configured to be able to receive an instruction as to whether the output unit should output the first display information or the second display information.
Radiation imaging device. In the radiographic imaging apparatus according to claim 5,
The first detector comprises an indicator,
The instruction unit is configured to be able to send an instruction as to which of the first display information and the second display information should be output to the output unit.
Radiation imaging device. In the radiographic imaging apparatus according to any one of claims 4 to 6,
The information processing device includes an input unit,
The input unit is configured to be able to input an image output by one of a laparoscope, a thoracoscope, and an ultrasonic diagnostic apparatus,
The display information generation unit is configured to be able to superimpose the first display information or the second display information on the image.
Radiation imaging device. In the radiographic imaging apparatus according to any one of claims 1 to 6,
The second detector has a curved surface facing the first detector,
Radiation imaging device. A program for operating a computer as an information processing device,
A program that causes a computer to function as the information processing apparatus according to any one of claims 1 to 8. A recording medium recording a program for operating a computer as an information processing device,
A computer-readable recording medium recording a program for causing a computer to function as the information processing apparatus according to any one of claims 1 to 8. An information processing device,
A first detection processing unit and a second detection processing unit,
The first detection processing unit detects a portable first detector configured to detect one of a pair of radiations generated by radioactive decay from a specimen and emitted in mutually different directions. Based on the result, it is configured to be able to generate first detection information including location information of the radiation emitting source,
The second detection processing unit is configured to detect the detection result of the first detector and the detection result of a stationary second detector configured to detect the other radiation of the pair of radiation. second detection information including location information of the emission source based on the
Information processing equipment. A radiographic imaging method,
comprising a first step and a second step;
In the first step, the detection result of a portable first detector configured to detect one of a pair of radiations generated by radioactive decay from the specimen and emitted in directions different from each other. based on, generating first detection information including location information of the radiation emitting source;
The second step is based on the detection result of the first detector and the detection result of a stationary second detector configured to detect the other radiation of the pair of radiation. and generating second detection information including location information of said emission source.

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